Template-Type: ReDIF-Paper 1.0 Author-Name: Waltman, L. Author-Name-Last: Waltman Author-Name-First: Ludo Author-Name: van Eck, N.J.P. Author-Name-Last: van Eck Author-Name-First: Nees Jan Title: Some Comments on Egghe’s Derivation of the Impact Factor Distribution Abstract: In a recent paper, Egghe [Egghe, L. (in press). Mathematical derivation of the impact factor distribution. Journal of Informetrics] provides a mathematical analysis of the rank-order distribution of journal impact factors. We point out that Egghe’s analysis relies on an unrealistic assumption, and we show that his analysis is not in agreement with empirical data. Creation-Date: 2009-03-18 File-URL: https://repub.eur.nl/pub/15184/ERS-2009-016-LIS.pdf File-Format: application/pdf Series: RePEc:ems:eureri Number: ERS-2009-016-LIS Classification-JEL: D24, M, M11, O21, R4 Keywords: distribution, impact factor, rank-order distribution Handle: RePEc:ems:eureri:15184